Final answer:
The Aga Khan Development Network (AKDN) serves 40 countries, focusing on education, health, and economic development, particularly in Asia and Africa.
Step-by-step explanation:
The Aga Khan Development Network (AKDN) serves several countries around the world, focusing on various areas such as education, health, culture, rural development, institution-building and the promotion of economic development. The correct answer to the question of how many countries the AKDN serves is c) 40. The AKDN operates in a wide range of areas, reaching out to many communities and countries, especially in Asia and Africa.